Prediction of antilock braking system condition with the vehicle stationary using a model-based approach |
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Authors: | Z Shi I Legate F Gu J Fieldhouse A Ball |
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Institution: | 1.School of Computing and Engineering,The University of Huddersfield,Huddersfield, Queensgate,UK;2.School of Mechanical Engineering,Hebei University of Technology,Tianjin,China;3.Diagnostic Solutions,Teradyne Orion Business Park, Bird Hall Lane,Stockport, Cheshire,UK |
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Abstract: | An Antilock Braking System (ABS) is one of the most important safety facilities equipped in modern vehicles. A self-test is
therefore embedded into its ECU to identify any electronic malfunction. However there is no effective method to predict or
check its mechanical conditions routinely to ensure its functionality. Because the ABS system is merely actuated above a particular
speed in emergency stops, the current brake test facilities are not adequate for ABS test. Because of the dangers involved
it would not be acceptable to use a public road to implement such a practice for fault detection so an alternative means must
be sought. To provide a safe and convenient solution this paper proposes a novel method to predict ABS faults whilst the vehicle
is stationary. In this situation a model-based approach is applied to predict various faults from the ABS, especially from
its hydraulic subsystem. As such, a mathematic model is developed to describe the operating processes of ABS including possible
faulty conditions. An autonomous control strategy is also designed to actuate the control module independently without the
knowledge of the control algorithms embedded in an ABS control module. This approach is evaluated through a Simulink simulation. |
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